What includes all matter, energy, space, and time?

What galaxy contains our Sun?

What type of celestial object is the Sun?

What force keeps planets in their paths around the Sun?

How is Earth's Moon classified based on how it formed?

Which requirement must a planet meet that a dwarf planet does not?

What are most asteroids mainly made of?

What kind of object is shown with a glowing head and tails near the Sun?

What is the glowing streak marked A in the atmosphere called?

What region is marked A in the solar-system diagram?

Where is the Kuiper belt located?

What is a space rock called after it survives passage through Earth's atmosphere and reaches the ground?

What group name is used for the small inner planets that have solid surfaces?

Which statement about planetary rings is correct?

Using the table, what planet completes one spin in the shortest time?

What planet rotates in the opposite direction to Earth and has an extremely hot surface?

What planet is second largest in our solar system?

What pair of planets has no natural moons?

Use the table. What planet takes the longest time to complete one trip around the Sun?

What motion is measured by the length of a planet's day?